modify firefox config, to use flake packages as extension

home/david/configurations/Tytonidae/firefox.nix

@@ -1,4 +1,10 @@
-{ pkgs, inputs, ... }:
+{
+  pkgs,
+  inputs,
+  outputs,
+  system,
+  ...
+}:
 {
   programs.firefox = {
     enable = true;
@@ -9,13 +15,9 @@
     profiles.default = {
       name = "default";
       isDefault = true;
-      extensions =
-        let
-          addons = (pkgs.callPackage inputs.firefox-addons { }).firefox-addons;
-        in
-        [
-          addons.immersive-translate
-        ];
+      extensions = [
+        outputs.packages."${system}".immersive-translate
+      ];
       search = {
         force = true;
         default = "DuckDuckGo";